Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Narrative (Details)

v3.20.2
Stockholders' Equity - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Sep. 11, 2019
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Outstanding options that are exercisable (shares)   1,500,000       1,500,000
Outstanding options that are exercisable, weighted average exercise price (USD per share)   $ 69.79       $ 69.79
Employee Stock Purchase Plan            
Stock repurchased during period   $ 0 $ 73,287,000 $ 33,717,000 $ 151,585,000  
Authorized stock repurchase amount $ 500,000,000.0          
Period in force of stock repurchase program 3 years          
Remaining authorized stock repurchase amount   $ 253,500,000       $ 253,500,000
Employee Stock Purchase Plan            
Employee Stock Purchase Plan            
Share purchase price as percent of market price (as a percent)           85.00%
Shares available for future purchases (shares)           56,079